The best alternative is Yahoo Publisher Network. Though, MSN adcenter too is an alternative, but it's not that popular. YPN has much better payouts than Google Adsense, but it is open to US publishers only.
Bidvertise is also ok. If your aim is to make some money then you need to create that site which relates to more bids in bidvertiser. It is less hassle to go with bidvertiser than with google. Have you ever tried that?